baber/WOPTO huggingface dataset:
Patent GB-494621-A (GB)
Title: Improvements relating to spacing mechanism for typewriters
IPC: B41J19/64
Filed: 1937-11-02
Abstract: 494,621. Typewriters. EVANS, K. D., and HOOVEN, C. E. Nov. 2, 1937, No. 29938. Convention date, Nov. 9, 1936. [Class 100 (iv)] Letter-spacing mechanism.-In positive-feed mechanism comprising an intermittently-driven rotary member controlled by a universal bar and adapted to impart equal spacing-movements for successive characters, manually operated means is provided for altering equally the spacing-movements with the object of typing justified lines. In the mechanism shown in Figs. 2 and 3, a follower 25 on the carriage 18 co-operates with a screw 23 journalled on the framework 10 and provided with a ratchetwheel 36 which co-operates with a pawl 35 mounted on an arm 34 secured to a loose pinion 33. A toothed slide 31 on the framework engages the pinion and is connected by a bell-crank 28 and link 27 to the plunger 26c of a solenoid 26. An actuation of the type-keys 11 or space-bar 22 contacts 47 in circuit with the solenoid are closed by means of a spring 48 arranged in the path of a spring 49 connected to the rock-arms 20 of the universal bail 19. Spacing is regulated by means of a pawl-shield consisting of a flange 37a on a disc 37 connected by a link 39 to a lever 38 which abuts on a cam 40 carried by an adjusting-dial 41. The dial is provided with graduations, preferably showing the number of characters per inch, and is set with reference to a pointer 43. When a typekey or the space-bar is depressed, the solenoid is energized, the pawl turns the screw, and the carriage receives a letter-spacing movement corresponding to the setting of the dial. A stop prevents overthrow of the pawl. To type a justified line, the excess or deficit is determined from a typed copy, and the dial is set to adjust the spacing during re-typing of part of the line. Carriage-returning mechanism.-A depressible carriage-returning lever 54, Fig. 3, arranged at the side of the keyboard, is secured to a sector 51 gearing with a pinion 50 which is secured to or has one-way connection to the screw 23.
Patent GB-808088-A (GB)
Title: Improvements in illuminating flares
Inventor: SCHERMULY ALFRED JAMES
IPC: F42B4/26
Filed: 1956-10-02
Abstract: 808,088. Signal flares. SCHERMULY PISTOL ROCKET APPARATUS Ltd. Sept. 27, 1957 [Oct. 2, 1956], No. 29956/56. Class 9(2) A pyrotechnic flare particularly for use as a signal at sea comprises a cylindrical casing 1, with an integral closure at one end, housing a similar casing 2, which contains a flare composition 4. An annular disc 5 of fusible metal e.g. lead-tin alloy is secured between flanges 3, 6 of the casings to form a waterproof seal for the composition 4. Extending through the disc 5 into a recess 8 in the composition is a percussion igniter 7 from which a fuze 9, e.g. a strip of primed cambric, leads to the surface of the composition. Non-combustible material 10 lines the recess 8. The casing 1 is housed in a container 11 of synthetic resin provided with a screw-threaded cap 12. A sealing washer (not shown) may be placed between the cap and the container. Specifications 275,830 [Class 9(ii)] and 555,650 [Group XXII] are referred to.
Patent GB-711634-A (GB)
Title: Improvements relating to circuit arrangements for the control of current supplied to a load from an alternating current source through a saturable reactor
IPC: G05F1/32
Filed: 1951-12-21
Abstract: 711,634. Automatic regulation. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and CORBYN, D. B. Nov. 7, 1952 [Dec. 21, 1951], No. 29990/51. Class 38(4) The D.C. current supplied to a variable load (for the cathodic protection of buried oil-pipe lnies) is regulated by a saturable reactor connected in series between an A.C. supply and a metal rectifier supplying the load, the reactor being controlled in accordance with the voltage drop across itself and either the input or the output voltage. The reactor 13 is in series with the supply to the transformer 9 and rectifier 2, and has a control winding supplied from a rectifier 18 according to a proportion of the voltage across the reactor (tapped off an auto-transformer 19) and the voltage across the primary of the transformer 9. In a modification, Fig. 2 (not shown), the first voltage is tapped off the reactor winding itself, and the second voltage is tapped off the primary of transformer 9. In a further modification, Fig. 3 (not shown), the first voltage is tapped off the reactor and the second voltage is tapped off an input transformer.
Patent GB-174203-A (GB)
Title: Improvements in or relating to cutlery grinding machines
IPC: B24B41/06
Filed: 1920-10-23
Abstract: 174,203. Oxley, G. H., and Hirst, A. Oct. 23, 1920. Work-holders.-A knife or like blade is held in a grinding-machine with its point end twisted about a substantially longitudinal axis. A blade-holder 1, Fig. 2, has a recess 2 to accommodate a blade 3. The recess tapers from bolster to point, and back to the cutting- edge of the blade, merging into the surface of the holder 1 along a line 4. A recess 6 may be formed on the opposite side of the line 4, but having a transverse taper opposite to that of the recess 2, the line 4 showing as a slight eminence between these recesses, Figs. 3, 4, and 5. With cylindrical rotating holders, the additional recess 6 is not necessary, but it is especially necessary with plane reciprocating holders. The blade 3 is preferably bent over the eminence 4 by electromagnetic means; but it mav be clamped at the bolster and tip. Channels 10 carry cooling-fluid to the back of the blade 3. Blades mounted on a cylindrical holder have a convexity ground at the point, and this part becomes approximately plane when the blade is released; whereas a blade mounted in a reciprocating holder is ground flat at the top and becomes slightly hollow on release from the holder. Exaggerated bending causes the cutting-edge to be ground concave.
Patent GB-895468-A (GB)
Title: Purification and fractionation of petroleum sulphonate mixtures
Inventor: CRUMP GEOFFREY BRIAN
IPC: C07C303/44
Filed: 1960-08-31
Abstract: Alkali metal and/or ammonium salts of mixtures of petroleum sulphonic acids are purified and fractionated by contacting with a weak ion-exchange resin impregnated with an aliphatic polar organic compound with up to 6 carbon atoms, and recovering the adsorbed salts by elution with organic solvents.  The polar compounds may be alcohols, e.g. methyl, ethyl, and isopropyl; glycols, e.g. ethylene, propylene and hexylene; polyglycols, e.g. diethylene and triethylene glycol; ketones, e.g. acetone and methyl ethyl ketone; aldehydes, e.g. acetaldehyde, and acids, e.g. acetic and propionic acid and may be used for impregnation as aqueous solutions.  The salts of the petroleum sulphonic acids are dissolved in solvents such as petroleum spirit, isooctane, straight or branched chain hydrocarbons, cyclohexane, benzene, toluene and xylene and passed over, for example in a column, the weak ion-exchange resins which may be those based on acrylate or methacrylate polymers with carboxylic acid groups, phenol-formaldehyde resins with phenolic or polyamine groups, amino or alkylamino substituted polystyrenes, and polymers of aliphatic polyamines.  The absorbed salts are collected in fractions by solvents in order of decreasing equivalent weights, as the polarity of the solvent increases.
Patent GB-230765-A (GB)
Title: Improvements in current collector-bows for electric vehicles
IPC: B60L5/20
Filed: 1924-12-15
Abstract: 230,765. Sokal, S., (Conradty, C. [Firm of]). Dec. 15, 1924. Bow collectors have a single carbon slip or contact which is held internally and extends across the bow. The contact may be bored throughout its entire length and slid upon a metal carrier.
Patent GB-804533-A (GB)
Title: Improved bicycle hub
IPC: B62M11/14
Filed: 1956-10-03
Abstract: 804,533. Ratchet clutches. FICHTEL & SACHS A.G. Oct. 3, 1956 [Nov. 24, 1955], No. 30177/56. Class 80 (2). A silent freewheel clutch, for a change-speed and back-pedal cycle hub 1, comprising pawls 4 pivotally carried on pins 5 on an output ring- gear of the gear and outwardly spring pressed to engage ratchet teeth 2a in the driven hub 1, has a pawl-control drag-ring 3, frictionally mounted in the ratchet ring 2a by outwardlyspringing tongues 9, and having slots 7 receiving the pawls 4 in driving position. When, on cessation of pedalling, the hub 1 overruns the stationary pawls 4 (in the direction of the arrow), the drag-ring 3 is carried round frictionally with the hub, and the leading ends 16 of the ring- slots 7 engage the pawls 4 and fold them down under the drag-ring 3, further ring movement being arrested by inturned parts 8. The pawls are thus held out of contact with the ratchet teeth, overrun is silent, and possible locking of the hub due to re-engagement of the pawls during back-pedal braking is prevented. When forward pedalling is resumed, the drag-ring 3 remains behind with the hub, and the pawls 4 move forwards and spring out through the ring slots 7 into driving engagement.
Patent GB-465407-A (GB)
Title: Improvements in tubular heat-exchange apparatus and particularly radiators for heating rooms
IPC: F28D1/053
Filed: 1935-11-01
Abstract: 465,407. Heating air &c. SOC. ANON. DES USINES CHAUSSON. Nov. 1, 1935, No. 30190. Convention date, Nov. 3, 1934. [Class 64 (i)] A tubular heat-exchanger and particularly a radiator for heating a room consists of a grid of parallel tubes disposed in a casing in a plane inclined in two directions to the plane a b c d normal to the direction of flow of the air &c. Two grids may be arranged as in Fig. 2.
Patent GB-484588-A (GB)
Title: Improvements in or relating to electron discharge device circuit arrangements
IPC: H04L27/04
Filed: 1936-11-06
Abstract: 484,588. Wireless transmitting systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and CLOUGH, N. H. Nov. 6, 1936, No. 30329. [Class 40 (v)] In an absorber keying system employing a sub-absorber valve VA and a keying valve VK, the keying valve anode-cathode circuit comprises a source of potential RC and an impedance 7 in series, the input is connected to the grid GVK of the keying valve VK and to the junction between the impedance 7 and the cathode CVK, the grid GVA of the sub-absorber valve VA is connected to a tapping 10 on potentiometer 6 across the potential source RC, and the cathodes of the two valves are connected to earth so that the impedance 7 is included in the input circuit to the sub-absorber valve VA.
Patent GB-643521-A (GB)
Title: Improvements relating to radiolocation apparatus
Inventor: HART GEOFFREY WALTER
IPC: G01S13/538
Filed: 1947-11-15
Abstract: 643,521. Radiolocation. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Nov. 15, 1947, No. 30369. [Class 40 (vii)] A radar system having a plan position indicator includes means for producing signals from a representation of the display exhibited by certain objects only in the explored field, and means for applying said signals to the indicator cathode-ray tube in opposition to signals received from said objects by reflection, whereby to suppress or weaken the indication on the P.P.I. of those objects. In one embodiment (shown schematically in Fig. 1) the deflection coils 3 of the P.P.I. cathode-ray tube 1 are moved in synchronism with the scanning of the aerial by motor 6 and the reflected echo signals are used to intensity modulate the tube. A second tube 10 is scanned in synchronism with tube 1, its beam being of constant intensity. In front of the tube 10 is a transparent plan 9 of the area of the P.P.I. display with the areas representing the objects whose indications it is desired to suppress made opaque. Light from the screen of tube 10 passing through plan 9 is directed to photo-electric tube 14, whose output amplified at 15 consists of negative pulses occurring at the same times as the receipt of echo signals from the objects corresponding to the opaque areas on the representation. The negative pulses so obtained are fed to the grid of the P.P.I. tube to suppress or weaken the indication of the permanently present objects concerned. If the indications of all known objects are suppressed and the screen is viewed by a photo-sensitive device 17 coupled to an alarm 18 the appearance of any new object will sound the alarm. The system may thus be used to give warning of unauthorized persons entering an area. Specification 577,855 is referred to.
Patent GB-928339-A (GB)
Title: Condensate removal means for steam heated drying drums
IPC: D21F5/10
Filed: 1959-09-07
Abstract: 928,339. Hollow rollers; condensate removal. JOHNSON CORPORATION. Sept. 7, 1959 [Nov. 5, 1958], No. 30485/59. Class 34 (1). Condensate is discharged from a rotary steam-heated drying cylinder through a head 36, Fig. 1, mounted on a pipe 34 connected by an elbow to a pipe 26 attached by set-screws to a spider 22 secured in a trunnion 16 of the cylinder. The head, together with the pipes and elbow, thus rotate with the cylinder. The head has a rim 82, Fig. 4, the end of which is shaped so as to be concentric with the cylinder wall, and is spaced from the wall by screws 70. The screws are jammed against the wall by a brace comprising a threaded rod 40, Fig. 2, screwed into the elbow and over which slides a sleeve 46 through which passes a rod 50 carrying a plate 48. The plate is held against the cylinder wall by a spring 52 adjustably loaded by nuts on the rod 40. Specifications 733,325, 878,800 and 928,340 are referred to.
Patent GB-603197-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B7/00
Filed: 1946-11-09
Abstract: 603,197. Furnaces. DONAGHY, C. A. D., TURPIN, D. D., PRITCHARD, D., and WHITTINGTON, R. B. Nov. 9, 1946, No. 30535/45. [Class 51(i)] Removable baffle discs, of firebrick or like refractory material, are placed concentrically in the flue of a steam-generator furnace, each baffle comprising upper and lower sections d<1>, d<2> having a tongue and groove connection d<3*> along a horizontal middle portion and inclined side portions, the lower section d<2> being disposed in slots d<4> in a pair of support legs d<5>, the ends d<6> of which are curved to correspond with the curvature of the flue.
Patent GB-995185-A (GB)
Title: Drum-type storage device for radioactive nuclear specimens
Inventor: GERARD VICTOR
IPC: G21F5/00
Filed: 1963-08-01
Abstract: 995,185. Storing radio-active material. COMMISSARIAT A L'ENERGY ATOMIQUE. Aug. 1, 1963 [Aug. 3, 1962], No. 30546/63. Heading B4Q. Apparatus for storing radio-active specimens comprises a concrete cell 2 surrounding an iron or lead casing 4 having an aperture 4b normally closed by a door 5. Within the casing 4 is a drum 6 rotatably mounted by shafts 7, 8, this drum, which is of shielding material, e.g. lead, having a recessed wall 6b to which are secured five support members 17 arranged one above the other and each having six recesses for receiving specimen-containing cups 18. To remove or insert the cups the drum is rotated by a handle 16 through a shaft 13 and gearing 11, 12 to align the selected vertical row of five cups with the aperture 4b, the cups being handled by power-operated means from a cut-off position known remotely controlled means. Additional protection may be provided by lead or cast iron blocks 19, 20.
Patent GB-1360066-A (GB)
Title: Stimulator circuit for a body organ
Inventor: BOWERS D L
IPC: A61N1/365
Filed: 1971-06-30
Abstract: 1360066 Body organ stimulator GENERAL ELECTRIC CO 30 June 1971 [10 July 1970] 30699/71 Heading A5R [Also in Division H3] A body organ stimulator comprises first and second circuit points, ground and 70, for connection to a d.c. source 72, first and second terminals, ground and 10, for connection to the body organ load RL, terminal 10 being connected to means for providing stimulation pulses through a series capacitor 67, said means including two series-connected controllable devices 60, 63, a pulse generator connected to apply pulses to device 60 to render it conductive, devices 60, 63 being so interconnected that when device 60 is conductive device 63 is non- conductive, a resistor 66 serving with device 63 to establish, when load RL is connected, a quiescent charge state of capacitor 67 such that when device 60 is rendered conductive by the pulse generator alteration of the charge state of capacitor 67 occurs by current flow in load RL and upon termination of the pulse applied by said generator to device 60, device 63 conducts and the quiescent charge state of capacitor 67 is re-established by current flow through device 63 and resistor 66. In a demand heart pacemaker embodiment signals from the heart are passed to a preamplifier and filter 13, which is refractory for a short period of time following receipt of a heart signal, such a signal giving an output 14 normally applied to a gated threshold trigger 15 giving an output 17. The output 17 gives rise to an output 24 from an interference rejector 23 only if the signals 17 are produced at a predetermined rate. The output 24 causes a transistor 25 to conduct to discharge a timing capacitor 30 and thereby prevent stimulation of the heart. If capacitor 30 is not prematurely discharged it charges to a potential at which transistor 34 conducts causing a signal 62 to be applied to the base of transistor 60 thereby discharging the capacitor 67 through the heart to stimulate the heart and causing transistor 63 to stop conducting. The trigger 15 is rendered inactive during the stimulation by means of a signal applied to transistor 19 causing the output 14 to be shunted to ground. The stimulating pulse duration is about two milliseconds following which transistor 63 becomes conductive to rapidly recharge capacitor 67 through the heart until the base-emitter voltage drop on transistor 63 is too small to keep it conducting whereafter recharging is completed through a high resistance 66, such as 1 megohm. Recharging takes place during the refractory period of the heart and of circuit 13; there is almost no net charge flow through the heart. The stimulating pulse amplitude is adjusted by means of a potentiometer 55. Alternative embodiments of the output circuit comprising capacitor 67 and two series-connected transistors are described, in two of which embodiments, Figs. 2, 4 (not shown), the heart is stimulated as capacitor 67 is charged through the heart, the capacitor being subsequently discharged through the heart during its refractory period.
Patent GB-1077141-A (GB)
Title: Improvements in or relating to devices for exerting high pressures on a body placed in a pressure chamber
IPC: B01J3/06
Filed: 1964-08-04
Abstract: 1,077,141. Very high pressure apparatus. PHILIPS' GLOEILAMPENFABRIEKEN, N.V. Aug. 4, 1965 [July 25, 1963], No. 30753/ 64. Heading B1X. A very high pressure apparatus suitable for the production of diamonds or for carrying out physical measurements at high pressures is characterised in that the pressure chamber (3) is defined by a surface of a pressure body (4) of each of at least three identical dies (1), said surface being of convex cylindrical form and the generatrices of the surfaces being parallel, and by two closure members the closure surfaces of which are parallel and cover the end surfaces of the pressure applying parts of the dies. As shown in Fig. 2, to which the above numerals refer, the pressure bodies 4 are of circular cross section and the closure members 10 (Fig. 1 not shown) have dies 13 defining the reaction chamber 3. The pressure bodies may also be elliptical in cross section. The dies are surrounded by a hollowwalled flexible tube 6 to which a liquid may be admitted under pressure through line 7, tube 6 being in turn surrounded by annular body 9. In place of the pressure-transmitting tube, hydraulic pistons may be employed. The closure members 10 are adapted to fit over the body 9 and are sealed thereto by seals 14. Sliding pieces 11 permit radial movement of the dies while preventing intrusion of the rubber tube 6. Discs 15 of p.t.f.e. may be provided between the end closure and the pressure bodies to facilitate radial movement of the dies despite the pressure imparted to the closure members 10 by the press in which the apparatus is used.
Patent GB-613119-A (GB)
Title: Improvements in or relating to lifting devices for prefabricated building units
IPC: E04G21/16
Filed: 1945-11-16
Abstract: 613,119. Lifting-slings. MALTHOUSE, E. G. Nov. 16, 1945, No. 30756. [Class 78 (iv)] [Also in Group X] A device for facilitating the lifting of a prefabricated building unit such as a precast floor or wall slab comprises an L- shaped cradle adapted to be clamped to the slab by a bolt passing through a hole in the slab with one limb of the cradle abutting the upper surface of the slab and the other limb abutting an end or side face of the slab and ending flush with the lower face of the slab so that the slab may be rocked about the end or side to which the cradle is clamped, the cradle relieving the edges of the slab from stress likely to damage them. In the embodiment shown in Figs. 1, 3, a floor slab is formed along opposite edges with bolts 23, 13 passing through sleeves 11 and engaging nuts 12 cast in position. The bolts 23 are formed with lifting rings 24 for engagement with a crane cable, whereby the slab may be turned into a vertical position about its righthand edge and the bolts 13 secure cradles 14 along this edge to protect it during this turning movement. Each cradle comprises a member 15 and angle-section members 16 which are spaced apart to form a slot 17 to receive the protruding end of a securing bolt 13 and connected together by,straps 18, 19 which serve as pads to bear against the upper surface of the slab. Members 20 secured to the limb 15 serve as pads to engage the end surface of the slab. The slab is transported in its vertical position by slings, Figs. 4, 6, secured to the slab at each end, these slings having eyes 31 interconnected by a chain 32 for attachment to a crane cable. Each sling, comprising arms 26 spaced apart by a bolt 27 is passed over an end of the slab and secured by a bolt 29 passing through the slab. Pads 30 secured to the arms 26 space these from the slab.
Patent GB-1179512-A (GB)
Title: Improvements in or relating to Mobile Jib Cranes
Inventor: EICHLER HERBERT
IPC: B66C23/74
Filed: 1967-07-04
Abstract: 1,179,512. Jib cranes; counterbalancing apparatus. SCHWERMASCHINENBAU S.M. KIROW VEB. 4 July, 1967, No. 30835/67. Heading B8B. A crane comprises an upper carriage 2 carrying a jib and rotatably mounted on an undercarraige 1, and a counterweight 3 which is releasably carried by an end of the carriage 2 when the crane is operating and at least part of which is carried by an end of the carriage 1 when the crane is travelling, wherein when the carriage ends are adjacent that of the undercarriage does not project beyond that of the upper carriage. Counterweight supports 4 are pivotally mounted on the undercarriage so that they can be swung into slots in the latter for crane operation and they have pins for engaging apertures in the lowest weight of the counterweight. The top weight on the undercarriage has apertures 11 to permit illumination of the road by headlamps on the undercarriage. In a second embodiment, Figs. 6 to 9 (not shown), the counterweight is secured to a horizontally movable frame in the upper carriage. For crane travel, the frame is moved towards the undercarriage and the counterweight is released from the frame and fastened to an inclined support on the undercarriage. Wedges are used to clamp the frame when the crane is travelling. Alternatively, the frame is disposed on the undercarriage.